Amulet of full healing, which heals you completely (or as much as an uncursed potion of full healing) when your HP drops to 0, but does not stave off non-HP-based forms of death.

New artifact The Golden Knight, a gold small shield that has the following properties:

• Sets strength to 25 when worn like gauntlets of power.
• Cannot be invoked directly, but if you fall below 25% of your HP maximum when your invoke timeout is good, it automatically invokes itself to take half of your current Pw points and heal you for that much HP.

If this doesn’t seem powerful enough, remove its strength effect and make the base item a shield of reflection instead.

A new spell that is primarily a healing spell, but is in the clerical school instead of healing and works by divine influence, which would make priests and knights good at casting it, but not healers and wizards.

When you complete your Quest and return the artifact back to your Quest leader, and if you return to them with the Amulet, you are rewarded with a (one-time) hero’s feast. This restores HP and fills your nutrition to just below Satiated (and increments the turn counter?)